Method of making paper fasteners



Oct. 11, 1938. I E. G. MARTIN ET AL 2,132,693

METHOD OF MAKING PAPER FASTENERS Filgd June 22, 1957 INVENTORfi E. G.MARTI N BY E. a. TAR

ATTORNEY.

fl Patented Oct. 11, 1938 PATENT OFFIQ'E METHOD OF MAKING PAPERFASTENERS Edward G.

Martin, Portland, reg., and Eugene E. Stark, Olympia, Wash.

Application June 22, 1937, Serial No. 149,674

1 Claim.

This invention relates generally to the stationers art and particularlyto paper fasteners.

The main object having been mentioned is a provision of an exceedinglysimple and eflicient form of paper fastener.

The second object is to construct a paper fastener by means of which anumber of papers may be fastened together into book form andother papersmay be added to the front or back thereof without removing the papersoriginally joined.

The further object is to construct a fastener of the type describedwhich will lend itself to machine application. I

These and other objects will become more apparent from the specificationfollowing as illustrated in the accompanying drawing in which:

Fig. 1 is a perspective view of a single fastener.

Fig. 2 is a plan showing a number of the fasteners joined.

Fig. 3 is a fragmentary section through a number of papers showing thefastener being inserted therein.

Fig. 4 is a view similar to Fig. 3 showing one end of the fastener bentover to form a head.

Fig. 5 is similar to Fig. 4 but it shows both ends bent to form heads.

Fig. 6 is a perspective view of the fastener showing one end thereofbent up for the ordinary T shaped fastener for manual insertion.

Fig, '7 is a fragmentary view showing a modified form of point.

Similar numerals refer to similar parts in the several views.

Before entering into the description of this invention, it must beunderstood that it is an improvement over the strip type of fasteners inwhich a separatehead is provided, or in which the entire fastener isconstructed from onepiece, in that as our construction enables the userto apply the papers to either end of the fastener instead of to one endonly, as was heretofore necessary. Referring in detail to the drawing,there is shown a pair of prongs l0 having points II at each end thereof.The points H are offset as indicated as a common provision to facilitatea separation thereof.

The prongs I0 are united at an intermediate point l2 by means of spotwelding or in any other convenient manner.

In the illustration, we have somewhat exaggerated the separation betweenthe prongs H] which normally lie in close contact with each other.

In the drawing, the portion I 2 isshown as being offset which would bethe case if the material was spot welded although naturally, this 5would be a lesser degree.

In the form of the device in Fig. 2, the parts of fasteners II] areunited into the form of a strip by any of the well known means fortemporarily uniting fasteners. The purpose of so uniting them is ofcourse, to facilitate their use in an applicator or fastener applyingmachine.

It will be noted in Fig. 3 that the prongs l0 have been inserted intothe opening I3 in the papers 14. 15

In Fig. 4 the ends l5 have been bent over to form a head on one side ofthe papers l4 and'in Fig. 5 the ends l6 have been bent over to form ahead which would be opposite the one formed by the ends l5. 20

It can be seen from the drawing, that additional papers l4 can be addedto or removed from either side of the file without removing any of thepapers from the prongs Hi,

In the production of this fastener, it is desirable to assemble twosheets of metal in the manner shown in Fig. 2 and to unite them along anintermediate line by means of a continuous spot weld IZA afterwardshearing into separate fasteners leaving the ends of the welded portionsmooth as a result thereof. In some cases it may be found desirable toform the points I I after the welding is performed. In such cases onlythe projecting end of each fastener is pointed, the other remainingblunt as shown in Fig. 7.

Obviously, the shape of the poins II as well as the means for unitingthe prongs I!) may be varied greatly without departing from the spiritof this invention.

We claim:

A method of making paper fasteners consisting of serrating the oppositeedges of a pair of sheets of metal, then imposing one of said sheetsupon the other in a manner that the serrations are in transversealinement but offset from each other, then welding said sheets togetheralong a line between and parallel with said points and then severingsaid joined sheets between the serrations.

EDWARD G. MARTIN. EUGENE E. STARK.

